I'm using the dfBlog theme on my own site at http://johnnasta.com/blog
The only problems I'm having with it are that the Bookmark Me and YARPP plugins do not display correctly with this theme.
Bookmark me shows the text before the icons, the Yahoo! Buzz icon, then there's a line break, then the rest of the icons. It seems like the only way to remove this (w/o hacking code) is to remove the preceding text and the Yahoo! Buzz icon. If either of them are there, the break is there.
YARPP (yet another related posts plugin) shows the "Related Posts" text shifted way over to the right, in the middle of nowhere.
I have used both of these plugins with several other themes on this site and others and this has never happened before, so it has to be something to do with this theme. The theme author's site is entirely in Spanish so I don't know if he speaks English. I don't speak Spanish.
Any ideas? For YARPP I was wondering if I could ad a br clear=all tag at the top of the output. Haven't tried it yet. I have no idea how to solve the problem w/ Bookmark Me.